use http.Method

api/client.go

@@ -72,7 +72,7 @@ func ClientFromEnvironment() (*Client, error) {
 		},
 	}
 
-	mockRequest, err := http.NewRequest("HEAD", client.base.String(), nil)
+	mockRequest, err := http.NewRequest(http.MethodHead, client.base.String(), nil)
 	if err != nil {
 		return nil, err
 	}

server/auth.go

@@ -91,7 +91,7 @@ func getAuthToken(ctx context.Context, redirData AuthRedirect) (string, error) {
 	}
 
 	s := SignatureData{
-		Method: "GET",
+		Method: http.MethodGet,
 		Path:   redirectURL.String(),
 		Data:   nil,
 	}
@@ -103,7 +103,7 @@ func getAuthToken(ctx context.Context, redirData AuthRedirect) (string, error) {
 
 	headers := make(http.Header)
 	headers.Set("Authorization", sig)
-	resp, err := makeRequest(ctx, "GET", redirectURL, headers, nil, nil)
+	resp, err := makeRequest(ctx, http.MethodGet, redirectURL, headers, nil, nil)
 	if err != nil {
 		log.Printf("couldn't get token: %q", err)
 		return "", err

server/download.go

@@ -89,7 +89,7 @@ func (b *blobDownload) Prepare(ctx context.Context, requestURL *url.URL, opts *R
 	}
 
 	if len(b.Parts) == 0 {
-		resp, err := makeRequest(ctx, "HEAD", requestURL, nil, nil, opts)
+		resp, err := makeRequest(ctx, http.MethodHead, requestURL, nil, nil, opts)
 		if err != nil {
 			return err
 		}
@@ -199,7 +199,7 @@ func (b *blobDownload) run(ctx context.Context, requestURL *url.URL, opts *Regis
 func (b *blobDownload) downloadChunk(ctx context.Context, requestURL *url.URL, w io.Writer, part *blobDownloadPart, opts *RegistryOptions) error {
 	headers := make(http.Header)
 	headers.Set("Range", fmt.Sprintf("bytes=%d-%d", part.StartsAt(), part.StopsAt()-1))
-	resp, err := makeRequest(ctx, "GET", requestURL, headers, nil, opts)
+	resp, err := makeRequest(ctx, http.MethodGet, requestURL, headers, nil, opts)
 	if err != nil {
 		return err
 	}

server/images.go

@@ -998,7 +998,7 @@ func PushModel(ctx context.Context, name string, regOpts *RegistryOptions, fn fu
 
 	headers := make(http.Header)
 	headers.Set("Content-Type", "application/vnd.docker.distribution.manifest.v2+json")
-	resp, err := makeRequestWithRetry(ctx, "PUT", requestURL, headers, bytes.NewReader(manifestJSON), regOpts)
+	resp, err := makeRequestWithRetry(ctx, http.MethodPut, requestURL, headers, bytes.NewReader(manifestJSON), regOpts)
 	if err != nil {
 		return err
 	}
@@ -1120,7 +1120,7 @@ func pullModelManifest(ctx context.Context, mp ModelPath, regOpts *RegistryOptio
 
 	headers := make(http.Header)
 	headers.Set("Accept", "application/vnd.docker.distribution.manifest.v2+json")
-	resp, err := makeRequest(ctx, "GET", requestURL, headers, nil, regOpts)
+	resp, err := makeRequest(ctx, http.MethodGet, requestURL, headers, nil, regOpts)
 	if err != nil {
 		log.Printf("couldn't get manifest: %v", err)
 		return nil, err

server/upload.go

@@ -67,7 +67,7 @@ func (b *blobUpload) Prepare(ctx context.Context, requestURL *url.URL, opts *Reg
 		requestURL.RawQuery = values.Encode()
 	}
 
-	resp, err := makeRequestWithRetry(ctx, "POST", requestURL, nil, nil, opts)
+	resp, err := makeRequestWithRetry(ctx, http.MethodPost, requestURL, nil, nil, opts)
 	if err != nil {
 		return err
 	}
@@ -187,7 +187,7 @@ func (b *blobUpload) Run(ctx context.Context, opts *RegistryOptions) {
 	headers.Set("Content-Type", "application/octet-stream")
 	headers.Set("Content-Length", "0")
 
-	resp, err := makeRequestWithRetry(ctx, "PUT", requestURL, headers, nil, opts)
+	resp, err := makeRequestWithRetry(ctx, http.MethodPut, requestURL, headers, nil, opts)
 	if err != nil {
 		b.err = err
 		return
@@ -334,7 +334,7 @@ func uploadBlob(ctx context.Context, mp ModelPath, layer *Layer, opts *RegistryO
 	requestURL := mp.BaseURL()
 	requestURL = requestURL.JoinPath("v2", mp.GetNamespaceRepository(), "blobs", layer.Digest)
 
-	resp, err := makeRequest(ctx, "HEAD", requestURL, nil, nil, opts)
+	resp, err := makeRequest(ctx, http.MethodHead, requestURL, nil, nil, opts)
 	if err != nil {
 		return err
 	}